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<head>
    <meta charset="UTF-8">
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    <title>Document</title>
</head>

<body>
    <script>
        let arr = [2, 4, 6, 2, 6, 2]
        let sum = 0
        let avg = 0
        function oddAvg(array) {
            for (let i = 0; i < array.length; i++) {
                if (array[i] % 2 !== 0){
                    avg = sum+=array[i]
                }
            }
            return avg
        }
        console.log(oddAvg(arr));
    </script>
</body>

</html>